I did all that was suggested, even registering with a different email; the key they sent still didn't work. when i installed the software, it said i had 60 DAYS to register, but within 2 DAYS, it no longer works at all and won't let me register. i appreciate the help, but without a solution, i may go to avg. i emailed the avast support team, but i received an automated reply suggesting the same stuff in the faqs and what you all provided.
-bounty